Locking device



R. K. GRAY.

LOCKING DEVICE.

APPLICATION FILED OCT. 29. I920.

Patented Aug. 9, 1921.

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RAYMOND K. GRAY, OF CHICAGO, ILLENOIS, ASSIGNOR TO THE GRAYHEE CORPORA- TION, OF CHICAGO, ILLTNQIS, A CQBPOEATION CF TLLII TOIS.

LOCKING DEVICE.

Application filed October 29, 1920.

To all whom it may concern:

Be it known that I, RAYMOND K. GRAY, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Locking Devices, of which the following is a specification.

This invention relates to locking devices, and more particularly to those of the chain and padlock type adapted for various uses, among which may bementioned the locking of spare tires and rims to the body of motor vehiclesto prevent the theft or unauthorized removal thereof.

A lockingdevice of the character described preferably consists of a stout chain having the padlock or lock proper fixed to one end, the opposite or free end being connected and locked to the padlock after the chain is passed through or about the parts to be locked together.

The object of the invention is to provide a simple, yet strong and dependable lock, capable of resisting breakage or tampering with by persons bent on unlocking the device for the purpose of stealing the articles locked thereby. The novel features of the device are hereinafter fully described and illustrated in the accompanying drawings, in which- Figure 1 is a view in side elevation of the locking device, with parts in locked position,

Fig. 2 is a view in side elevation of the device showing the parts in unlocked position,

' with a portion of the casing broken away,

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. .1, and

Fig. 4 is a view in perspective of the locking bolt and arm removed.

The locking device comprises in general a body or look casing 1, a block 2, anda link chain 3 permanently connected at one end to the casing 1, and to have its free end connected and disconnected from the lock proper by the locking and unlocking of the latter. As a preferable arrangement, the casing 1 and block 2 are separable. the latter including suitable locking mechanism operative by means of a key. I

The lock casing 1 consists of a metal shell of rectangular shape having its exterior surfaces slightly rounded or convex to afford a shape conveniently handled and pleasing in Specification of Letters Patent.

Patented Aug. it, 1921..

Serial No. 420,344.

and to slide into and out of the cavity of the casing l. The upper end of the block is provided with a marginal flange 2 adapted to engage flatwise against the open end of the casing, and to close the same when the parts are in locked position. The locking mechanism carried by the block comprises a barrel or cylindric plug 5 rotatively mounted in an annular bore extending transversely through the block at a point near the inner end and somewhat offsetfrom the central axis thereof. The barrel or plug 5., which need not be described and illustrated in detail, is of the usual construction employed in locks of the cylinder ty e, the same being operative only when the proper key is inserted in the key slot 5 disposed in slightly eccentric relation to the axis of rotation ofthe plu 5, and located at one end thereof. As a I prererable arrangement, the locking mechanism is constructed so that the key can only be inserted and removed from the slot when the parts are in unlocked position. Pivotally connected to the barrel at the opposite end from the key slot 5 is a crank arm 6 engaging a pin 7 carried by the barrel and set off center or eccentrically to the axis of rotation thereof. The crank arm extends laterally from the barrel toward the side wall of the casing distant from the barrel, and is connected at its outer end by a simple form of tongue and groove connection with a bolt or locking block 8, 'slidably mounted in a transverse slot 9 formed in the face of the block 2. The side wall of the casing, adjacent to the bolt 8, is concave to conform to the contour of the outer surface of the casing, is provided intermediate the length thereof with an inwardly projecting shoulder 10 in transverse alinement with said bolt. In the wall of the casing 1-, and located in registering relation with the key slot of the barrel 5 when the block is in' looking position, is a circular aperture 11 thereby permitting a key to be inserted into the locking mechanism, this aperture being of sufficient diameter to permit the slightly eccentric rotation of the barrel 5 in turning the key.. Communicating with the aperture 11 at its upper edge is a narrow slot 12 extending longitudinally of the casing toward the open end thereof, said slot being slightly oitset from the center of said aperture. The purpose of this slot will be presently pointed out.

The locking mechanism isoperated as before suggested, by inserting the proper key into the key slot through the aperture 11 in the wall or" the casing 1. Thekey slot 5 in unlocking position, extends vertically, so by rotating the barrel in a counter-clockwise direction through a quarter turn, the latch is thrown outwardly and into locking ens gagement with the shoulder to the position shown-in Fig. 1. In like manner the bolt is drawn back by rotating the barrel in the opposite direction, whereupon the block 2 may be withdrawn from the casing,.as shown in Fig. 2. It is to be observed that in looking position, the key slot, and hence the key, are

positioned vertically or in alinement with n the narrow slot 12in the wall of the casing;

thus the blockmay be withdrawn without removing the key from the lock; that is, the

block is only partially withdrawn, the key passing along the slot12 until it strikes the end thereof, and preventing further removal of the block. As it will be presently pointed out, it is not necessary'to entirely withdraw the block to accomplish the locking or unlockingoperations; therefore it is manifestly more desirable that the key remain within the key slot during consecutive acts of unlocking andlocking the device.

As a means of connecting the free end of :the chain 3 to the padlock, the following is employedzln the opposite walls and ex tending longitudinally from the open end of the casing are provided two slots 1313, and in the block 2 is a single slot 14 extending at right angles to the slots 1313, and transversely to one of the longitudinal edges of the block, said slots 13 and 14: being so arrangedthat when the parts are in locked position, the inner ends of said slots are in registering relation, thereby forming a circular opening extending through the casing. Thus,if the linklfi be considered the free endof the chain 3, it would be inserted in the slot 14 of; the block when the same is partially withdrawn from the casing, and then the block forced into the casing and locked, the link is secured within the co-acting slots 13 and 14 I The construction herein illustrated and described provides a substantial and reliable locking device, particularly well adapted for the purposes for which it is designed, in

that the locking mechanism is completely 7 themore delicate parts, the latter feature being particularly desirable in a locking de vice constantly exposed to the elements and road conditions. In short, the several novel features, singly and in combination, coiperate to provide the desirable form of locking devire hereinbefore described, and more spe- I claim as my invention: 7 V l. locking device comprising a lock rasing,

operated locking mechanism carried bysaid cifically set forth in the appended -claims.

a block insertible in said'casing, key

block and operative through an opening in said casing registering with said locking mechanism when said blot-k is in looking po- 'Sll3101l, and means permitting the withdrawal of said block when keyis in the locking mechanism. 7

2. A locking device comprisinga lockcasing, a block insertible in said casing, lo'cking mechanism carried by saidbl'ock, and

comprising a key operated cylindric locking member, an opening formed in said casing and adapted to register with said cylindric locking member when said block is in lock ing position, and means permitting the withdrawal of said block from'locking position without removal of the key'from the cylindric locking member. i

'3. A locking device'comprising a lock casing, a block insertible in said casing,,1 1 m mechanism carried by saidrblock compri's ing a key operated member, a locking bolt i V operatively; connected with said key operated member, and-adapted to be moved opening in" registering relation with "said key operated member, and a slot permitting thereby into and out of locking engagement the relative. movement of saidiblock and casing whena key is in said key operated member.

i *4. A locking device comprising alocki-cas ing, a block insertible into an opening in said casing, locking mechanismcarried by said block, comprising a key actuated memher, said casing being provided with an aperture positioned. to register with said key actuated member when said block isin lock;

ing position, and a slot communicating with i said aperture permitting the withdrawal of said block into unlocking position.

f 5. A locking device comprising a lock casing, a locking block insertible 'in saidcasing, and provided witha slot adapted to be I open at one end when said block is partly 'withdrawn from said casing, "and to be closed when said block is in locking position, key operated locking mechanism carried by said block, and a key slot formed in said casing and acting to permit the withdrawal of said block when a key is within the locking mechanism.

6. A locking device comprising a lock casing, a locking block insertible in said casing, a slot formed in said block and open at one end when said block is withdrawn from the casing, and a cooperating slot in said casing adapted to close the first mentioned slot when said block is advanced into locking position.

7. A locking device comprising a lock casing, a block insertible in said casing, locking mechanism for locking said block in said casing, a slot formed in one edge of said block and open at its outer end when said block is in partially withdrawn position, and a transverse slot in said casing registering with the inner end of the slot in said block, and closing the open end thereof when said block is in locking position.

8. A locking device comprising a lock casing having a cavity open at one end, a block insertible in said cavity and provided with a marginal flange serving as a closure therefor, locking mechanism carried by said block, an open slot formed in said block and adapted to receive a link of a chain when said block isin unlocked position, a transverse slot in said casing cooperating with the slot of said block to secure said link when said block is in locking position, and means permitting the withdrawal of said block into unlocking position with a key inserted in said locking mechanism.

In witness whereof, I hereunto subscribe my name this 26th day of October, A. D. 1920.

RAYMOND K. GRAY. 

